/**
 * Software License, Version 1.0
 * 
 * Copyright 2003 The Trustees of Indiana University.  All rights reserved.
 * 
 *
 *Redistribution and use in source and binary forms, with or without 
 *modification, are permitted provided that the following conditions are met:
 *
 *1) All redistributions of source code must retain the above copyright notice,
 * the list of authors in the original source code, this list of conditions and
 * the disclaimer listed in this license;
 *2) All redistributions in binary form must reproduce the above copyright 
 * notice, this list of conditions and the disclaimer listed in this license in
 * the documentation and/or other materials provided with the distribution;
 *3) Any documentation included with all redistributions must include the 
 * following acknowledgement:
 *
 *"This product includes software developed by the Community Grids Lab. For 
 * further information contact the Community Grids Lab at 
 * http://communitygrids.iu.edu/."
 *
 * Alternatively, this acknowledgement may appear in the software itself, and 
 * wherever such third-party acknowledgments normally appear.
 * 
 *4) The name Indiana University or Community Grids Lab or NaradaBrokering, 
 * shall not be used to endorse or promote products derived from this software 
 * without prior written permission from Indiana University.  For written 
 * permission, please contact the Advanced Research and Technology Institute 
 * ("ARTI") at 351 West 10th Street, Indianapolis, Indiana 46202.
 *5) Products derived from this software may not be called NaradaBrokering, 
 * nor may Indiana University or Community Grids Lab or NaradaBrokering appear
 * in their name, without prior written permission of ARTI.
 * 
 *
 * Indiana University provides no reassurances that the source code provided 
 * does not infringe the patent or any other intellectual property rights of 
 * any other entity.  Indiana University disclaims any liability to any 
 * recipient for claims brought by any other entity based on infringement of 
 * intellectual property rights or otherwise.  
 *
 *LICENSEE UNDERSTANDS THAT SOFTWARE IS PROVIDED "AS IS" FOR WHICH NO 
 *WARRANTIES AS TO CAPABILITIES OR ACCURACY ARE MADE. INDIANA UNIVERSITY GIVES
 *NO WARRANTIES AND MAKES NO REPRESENTATION THAT SOFTWARE IS FREE OF 
 *INFRINGEMENT OF THIRD PARTY PATENT, COPYRIGHT, OR OTHER PROPRIETARY RIGHTS. 
 *INDIANA UNIVERSITY MAKES NO WARRANTIES THAT SOFTWARE IS FREE FROM "BUGS", 
 *"VIRUSES", "TROJAN HORSES", "TRAP DOORS", "WORMS", OR OTHER HARMFUL CODE.  
 *LICENSEE ASSUMES THE ENTIRE RISK AS TO THE PERFORMANCE OF SOFTWARE AND/OR 
 *ASSOCIATED MATERIALS, AND TO THE PERFORMANCE AND VALIDITY OF INFORMATION 
 *GENERATED USING SOFTWARE.
 */
package cgl.narada.jms;

import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageListener;

/**
   A client uses a MessageConsumer object to receive messages from a 
   destination. A MessageConsumer object is created by passing a Destination 
   object to a message-consumer creation method supplied by a session. 
   MessageConsumer is the parent interface for all message consumers. 
   
   @author Shrideep Pallickara
   $Revision$
   $Date$
*/

public class JmsMessageConsumer implements MessageConsumer {
  /** The message selector of the consumer */
  private String messageSelector;
  
  /** The message listener */
  private MessageListener messageListener;
  
  /** Gets this message consumer's message selector expression. */
  public String getMessageSelector()  throws JMSException {
    return messageSelector;
  }
  
  /** Gets the message consumer's MessageListener.
      @return the listener for the message consumer, or null if no listener 
      is set. */
  public MessageListener getMessageListener() throws JMSException {
    return messageListener; 
  }
  
  /** Sets the message consumer's MessageListener. Setting the message 
      listener to null is the equivalent of unsetting the message listener 
      for the message consumer. */
  public void setMessageListener(MessageListener listener)
    throws JMSException {
    messageListener = listener;
  }
  
  /** Receives the next message produced for this message consumer. 
      This call blocks indefinitely until a message is produced or until 
      this message consumer is closed. */
  public Message receive() throws JMSException {
    /** JMS-NI */
    return null;
  }
  
  /** Receives the next message that arrives within the specified timeout 
      interval. */
  public Message receive(long timeout) throws JMSException {
    /** JMS-NI */
    return null;    
  }
  
  /** Receives the next message if one is immediately available.*/
  public Message receiveNoWait() throws JMSException {
    /** JMS-NI */
    return null;    
  }
  
  /** Closes the message consumer.  */
  public void close() throws JMSException {
    messageSelector = null;
    messageListener = null;
  }
  
}
